Images
A 25 MB image file, on demand.
Exactly 26,214,400 bytes, built on your machine the moment you press the button. Starts as PNG — switch to JPG or WebP with the picker above.
26,214,400 bytes, exactly.
Every format below reaches your target size with real, structurally valid padding — not a renamed blob of zeros.
Unit convention
25 MB on this page means exactly 26,214,400 bytes, using the binary (MiB) convention some systems label "MB" for short. 1 MB in the strict decimal sense is 1,000,000 bytes; 1 MiB is 1,048,576 bytes — the readout above always shows the exact count either way.
Approximate size equivalents
Roughly 14,564 pages of typed text, 27 minutes of 128 kbps audio, 2 minutes of CD-quality audio, 10 photos from a 12 MP camera. These figures compare file size only — the generated file does not contain this text, audio or image content.
Accepted by
Gmail attachment, Cloudflare Free proxy body, GitHub repository file — all publish a limit at or above this size, based on commonly cited figures that can vary by plan and change over time.
Rejected by
Outlook.com attachment, Discord free attachment, AWS API Gateway payload — this exceeds their commonly cited limit, which makes it a useful negative test. Published limits can vary by plan and change over time.
Prefer a specific format?
Some upload forms only care about the extension. Jump straight to a 25 MB file in one exact format:
Questions.
Is this 25 MB image file valid?
Yes, whichever format you pick. Each one is a genuine PNG, JPG or WebP — not a renamed blob — padded to reach the exact size, and it opens normally in standard viewers and browsers.
Which format should I choose?
PNG and JPG are accepted almost everywhere image uploads are tested. WebP is smaller and increasingly common. If a specific tool only accepts one format, use the picker above to match it.
Does 25 MB mean 26,214,400 bytes?
On this page, yes — 25 MB uses the binary (MiB) convention, so the file is exactly 26,214,400 bytes. 1 MB in the strict decimal sense would be a different, smaller byte count. Upload validators may use either convention, so the exact byte count is always shown to remove any ambiguity.
Where is the file downloaded from?
Nowhere. It is assembled in a Web Worker on your own device and handed to the browser as a Blob, so nothing is uploaded, fetched or stored.